• 한국컴퓨터정보학회논문지
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• 제6권2호
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• pp.58-64
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• 2001

세계항만의 컨테이너 물동량은 2011년까지 연평균 8.8％로 꾸준히 증가할 것으로 예상하고 있으며, 기존 항만 시설로는 이러한 추세를 충족시킬 수 없기 때문에 시설 확충은 필연적이다. 그리고 항만에서 발생되는 비용이 전체 물동량에 발생되는 비용의 30％를 차지하고 있기 때문에 세계 주요 항만에서는 점차 높아지는 인건비와 부족한 노동력 문제를 해결하고 토지 이용과 작업 능률을 극대화하기 위한 항만 시설의 자동화에 노력을 기울이고 있다. 특히, 항만시설 중에서도 화물이 발생되고 소멸되는 장소로서 정보의 시작점과 종착점이 되는 게이트의 자동화가 무엇보다도 중요한 이슈로 대두되고 있다. 본 연구에서는 항만의 게이트를 최적으로 자동화하는데 적합한 설계 방안을 제시하고자 한다.

• 한국항해학회지
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• 제24권5호
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• pp.373-383
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• 2000

The ship’s safe mooring stability is a principles for the safe cargo handling works at the mooring berth. Today numerous standards, guidelines and recommendations concerning mooring practices, fittings and equipments exist throughout the worldwide maritime industries. In recently, the mooring facilities were constructed as dolphin types at the open sea area apart far from shoreside instead of enclosed coastline area in accordance with increasing ship’s size and for preventing environmental pollution. Therefore the exciting wave condition must be considered as a basic environmental criteria with the wind force and current force for all of the mooring ships at the sea berth facilities. In this study, this added wave force as one of the environmental external forces by using the theoretical formula was applied to the LNG ship in Pyeongtaeg harbor needed the special mooring stability of the sea berth. Through this research, it can be confirmed that wave force is the very important factor in the mooring force and the strength of wave force works much more in the full laden condition than in the lightship condition. And also the wave force changes to non-linear states according to the wave frequency and wave length. In addition, the maximum limit criteria of environmental force of prohibiting the entering ship on the berth and loading works controlled by the port authority concerned of Pyeongtaeg port fully satisfies the condition of the mooring limit force recommended by OCIMF that the safe permitted force of the mooring line have to be within 55 % of MBL.

• 한국항해항만학회지
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• 제32권4호
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• pp.305-313
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• 2008

Recently it was known that the problems of nearshore processes and damage of berth and counter facilities frequently had appeared at the small fishery port, such as Daebang near Samcheonpo city, Korea. Here we try to analyze the impact of the rearrangement of counter facilities and berth layout adopted for tranquility of its inner harbor. Because this harbor is being connected to Daebang channel, the rearrangement of the structures might affect to the current speed and direction and wave height, so do to the sea bottom undulation. Therefore, we made model test for the several layouts of the berth and breakwater in this area. Numerical model result shows that the bottom was eroded by 1m by tidal currents and the speed of flow did not shrink, even after the construction work was completed. The direction of the sand movement was downdrift. Although the model study gave reasonable description of beach processes and approach channel sedimentation mechanism, it is necessary to compare with the field history, including the records of waves, tides and bottom materials, etc. for better prediction.

• 한국항해항만학회지
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• 제33권7호
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• pp.491-500
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• 2009

In order to attract more transshipment cargoes, Busan Port Authority (BPA) has, since 2003, adopted the volume incentive policy by which more than US$ 10 million annually have been paid back to shipping lines that were called at the port. However, having been a transshipment port for the Northeast region of China, the port of Busan has come under threat from bold Chinese port development projects, notably Shanghai, as northern Chinese regionnl ports place more emphasis on building facilities capable of handling growing trade volumes. Undoubtedly this would lead to a decline in transshipment container traffic moved via Busan. The purpose of this paper is to identify some core factors that have been affecting the increase of transshipment cargoes of Busan and further to recommend BPA an improved incentive scheme with which more T/S cargoes can be attracted into the port of Busan To clarity the reason why T/S cargoes have increased in the port of Busan, several steps are made as follows: The first step is to make a quantitative model for explaining the development of T/S cargoes during the last decade. The second step is to define the dependent and the independent variables for multiple regressions after testing variable significance. For this, data collection and the accuracy of validation have been done by the direct interview with the experienced staffs in shipping companies of both domestic and foreign country. After validating the model with collected data, the final step is to find variables which are explaining the model mostly. In conclusion, 2 variables were clearly identified as core factors that explain well the development of T/S cargoes in the port of Busan: 'Mohring effect' and total cost. It is strongly recommended, by an empirical study, that an incentive scheme be changed to a way which more feeder vessels rather than mother vessels can reduce their direct costs to call in the port of Busan.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2003년도 춘계학술발표회
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• pp.7-15
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• 2003

This paper is intended as an investigation of introduction of Maritime Security System. In the last few years, several articles have been devoted to the study of ISPS Code(International Code for the Security of Ships and of Port Facilities). The Diplomatic Conference on Maritime Security held in London in December 2002 adopted new provisions in the International Convention for the Safety of Life at Sea, 1974 and this ISPS Code to enhance maritime security. These new requirements form the international framework through which ships and port facilities can co-operate to detect and deter acts which threaten security in the maritime transport sector. Accordingly, the purpose of this paper is to suggest an introduction of Maritime Security System and understanding of ISPS Code.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2000년도 가을 학술발표회논문집(I)
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• pp.253-258
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• 2000

Recently, the area of design optimization, especially structural optimization, has been and to be a continuous active area of research. And the design optimizations of port facilities have been achieved by many other civil engineers. But the design optimization of port facilities were limited to the design optimization of the breasting dolphin. This paper invested the design optimization of mooring pier and the foundations of mooring pier was suggested considering the convenience of repair and reinforcement work. The mooring pier devised with prestressed precast concrete panel and rigid frame welded wide flange beam to steel pipe pile. To accomplish the design optimization of mooring pier, the Augmented Lagrangian Multiplier Method(ALM) of ADS(Garret N. Vanderplaats) optimization routine, BFGS method as optimizer and Golden Section Method as one dimensional search were utilized. As a result, thirty percent of material cost for construction was reduced by design optimization. The tensile stress of concrete panel and bottom flage was critical constraints under service load. So, using high strength concrete and steel will be economical. And lots of initial values must be invested to accomplish the design optimization in design procedures.

• 한국항만경제학회지
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• 제22권1호
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• pp.175-198
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• 2006

This paper presents a network capacity model that can be used as an analytical tool for strategic planning and resource allocation for multimodal transportation systems. In the context of freight transportation, the multimodal network capacity problem (MNCP) is formulated as a mathematical model of nonlinear bi-level optimization problem. Given network configuration and freight demand for multiple origin-destination pairs, the MNCP model is designed to determine the maximum flow that the network can accommodate. To solve the MNCP, a heuristic solution algorithm is developed on the basis of a linear approximation method. A hypothetical exercise shows that the MNCP model and solution algorithm can be successfully implemented and applied to not only estimate the capacity of multimodal network, but also to identify the capacity gaps over all individual facilities in the network, including intermodal facilities. Transportation agencies and planners would benefit from the MNCP model in identifying investment priorities and thus developing sustainable transportation systems in a manner that considers all feasible modes as well as low-cost capacity improvements.

• 한국항만학회지
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• 제12권2호
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• pp.313-322
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• 1998

The distributions of chemical oxygen demand (COD) and suspended solid (SS) in Ulsan Bay were simulated and reproduced by a numerical ecosystem model for the practical application to the management of marine water quality and the prediction of water quality change due to coastal developments or the constructions of breakwater and marine facilities. Comparing the computed with the observed data of COD and SS in Ulsan bay the results of simulation were found to be good enough to satisfy the practical applications.

• 한국항해항만학회지
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• 제26권5호
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• pp.549-554
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• 2002

국가는 재난에 대비한 범국가적 해양 구난방제체제 수림이 절실히 요구되고 있다. 그러나 우리나라는 구난방제 시설과 기술이 부족한 관계로 대형 해양사고 발생시 그 처리를 외국기술에 의존하는 형편이다. 이로 인해 가장 중요한 사고초기에 적절한 대처를 못하여 사고의 피해를 크게 확산시킬 우려가 상존하고 있다. 이에 이 논문에서는 해양사고가 발생할 경우 신속하고 효과적인 구난방제작업을 할 수 있도록 구난방제체제의 기반조성과 시설투자, 기술개발 및 능력 배양 등 다각적인 방안을 제시하였다.

• 한국지역지리학회지
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• 제17권6호
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• pp.753-765
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• 2011

2010년 5월 새만금방조제가 준공되면서 새만금방조제와 비응항을 방문하는 관광객이 증가함에 따라 비응항을 관광복합어항으로 육성하려는 논의가 활발하다. 본 연구는 새만금방조제와 인접해 있는 군산 비응항의 활성화 방안을 도출하기 위하여 비응항을 방문하는 관광객을 대상으로 관광행태를 분석하였다. 비응항을 방문하는 관광객의 거주지는 전북이 가장 많았고, 가족과 친지 중심의 당일 관광이 주류를 이루었다. 주요 관광 목적지는 새만금방조제와 비응항으로 분석되었다. 비응항의 관광에 있어 주요 불편사항은 주차장과 편의시설 부족이었고, 관광 활성화를 위한 대안으로 많은 관광객들이 관광지로서 비응항의 경관정비, 특산품의 브랜드화 등을 제시하였다. 7개 지표에 의한 비응항 관광기반시설에 대한 만족도는 평균 이하로 분석되었지만, 관광지로서 비응항에 대한 종합적인 평가는 비교적 높게 나타났다.